6533b824fe1ef96bd1280852

RESEARCH PRODUCT

Search for newπ0-like particles produced in association with aτ-lepton pair

Douglas WrightA. StocchiAndrei SalnikovA. RoodmanI. M. PeruzziMaurizio MartinelliM. K. SullivanE. FioravantiD. B. MacfarlaneRoland WaldiR. GorodeiskyClaudio CampagnariJ. M. RoneyM. SimardD. A. RobertsF. BianchiF. FerroniW. T. FordTim AdyeM. PerlS. DittrichR. D. KassG. GrosdidierJ. G. SmithR. CenciPaul Fraser HarrisonM. Lo VetereA. ZalloV. PrasadJ. L. RitchieS. I. SerednyakovRoberto CalabreseA. HafnerE. P. SolodovGiulia CasarosaG. WormserP. M. PatelE. M. T. PuccioT. S. MiyashitaF. FortiStephen Robert WagnerP. PatteriG. FinocchiaroJ. OcarizM. S. AlamR. Y. SoR. AndreassenM. FritschBiplab DeyEnrico RobuttiP. OngmongkolkulA. CalcaterraC. HeartyMaxim PospelovJ. W. GaryP. SonnekT. SchroederP. C. KimF. F. WilsonEleonora LuppiB. BhuyanR. FacciniF. FerrarottoA. J. LankfordF. Le DiberderD. J. SummersJ. BougherR. CheaibB. G. FulsomJ. D. RichmanGabriele SimiF. Di LodovicoMarco BombenA. AdametzG. R. BonneaudJ. Va'vraW. J. WisniewskiM. BellisK. Yu. TodyshevD. J. PayneM. J. LeeAbner SofferR. SaccoC. L. DavisG. SciollaJ. M. LoseccoPablo Villanueva-perezMaurizio BiasiniA. G. DenigB. HamiltonM. EbertB. N. RatcliffB. MalaescuP. C. BloomH. L. LynchJ. R. FryR. J. SobieF. De MoriL. VitalePh LerusteN. ArnaudF. Martinez-vidalV. LuthV. E. BlinovP. LewisA. M. RossiG. A. CowanJoseph IzenC. H. ChengColin JessopDominik MüllerR. PrepostStefan SpanierMartino MargoniG. J. KingS. MartellottiA. J.s. SmithG. CalderiniM. MorandinM. VerderiL. M. CremaldiL. Li GioiM. CarpinelliR. C. FieldH. AhmedU. UwerP. TarasSimon AkarYuri SkovpenR. De SangroJ. DorfanG. OnoratoOwen Rosser LongA. SeidenG. RizzoR. StroiliM. RamaS. L. WuF. SimonettoN. TasneemHeiko LackerD. GambaA. FilippiU. MallikN. GuttmanB. StuguMaria Roberta MongeW. H. TokiZ. C. HuardAndrea Rodriguez PerezI. M. NugentJames R. WilsonG. RavenD. G. HitlinAidan Randle-condeH. BriandJ. A. ErnstG. MarchioriM. Franco SevillaM. D. SokoloffJ. A. MckennaP. R. BurchatR. GodangD. S. ChaoNicola NeriDmytro KovalskyiJ. P. LeesR. M. WhiteChunhui ChenS. LuitzK. R. SchubertC. CartaroM. GasperoB. SpaanM. DavierW. GradlL. LanceriE. PaoloniAlessandro GazBruce SchummD. LindemannM. R. ConveryS. H. RobertsonS. EmeryG. LynchJ. P. ColemanG. VasseurK. T. FloodJ. ChauveauG. EigenA. M. EisnerP. RoudeauChristopher WestD. E. HutchcroftB. G. PushpawelaT. LeddigT. PulliamHerbert KochK. GriessingerV. SantoroH. R. BandW. S. LockmanE. O. OlaiyaE. GraugesS. PrellM. V. PurohitFlorian Urs BernlochnerMario GiorgiF. PalomboT. LueckAndrei GritsanJames D. OlsenJ. AlbertX. C. LouBrian MeadowsJ. J. WalshH. H. F. ChoiSridhara DasuC. HastL. T. KerthD. N. BrownG. D. LaffertyJames H CochranV. PoireauD. J. BardA. LusianiV. P. DruzhininT. M. HongS. BettariniR. F. SchwittersR. AyadR. ContriS. PacettiR. CowanM. T. GrahamCorrado AngeliniStephen SekulaD. Lopes PegnaA. KhanC. BozziK. HonscheidB. EchenardD. BernardR. J. BarlowM. PosoccoA. P. OnuchinL. SunAlberto CervelliAdrian John BevanH. NealD. W G S LeithA. R. BuzykaevY. B. PanR. KowalewskiDenis DerkachA. BeaulieuAlessandro PilloniD. R. PeimerD. AstonF. AnulliD. BettoniI. GarziaC. PatrignaniV. TisserandG. P. Dubois-felsmannL. PiemonteseE. GabathulerF. C. PorterM. ChrzaszczC. VoßSw. BanerjeeW. DunwoodieC. BüngerA. JawaheryG. CibinettoE. FeltresiB. OberhofM. J. LewczukM. RotondoE. A. KravchenkoCrisostomo SciaccaG. De NardoM. RöhrkenM. HessT. E. LathamYg KolomenskyV. B. GolubevElisa ManoniB. C. WrayS. PlayferD. SuM. PiccoloG. BatignaniA. PalanoDavid MckeenM. MandelkernE. Ben-haimT. S. MattisonD. J. LangeG. PireddaH. W. WulsinW. Panduro VazquezA. SnyderW. R. InnesT. J. GershonA. OyangurenC. TouramanisO. GrünbergR. H. SchindlerA. M. LutzS. Passaggio

subject

PhysicsNuclear and High Energy PhysicsParticle physicsAnnihilationMeson010308 nuclear & particles physicsAssociation (object-oriented programming)Monte Carlo methodForm factor (quantum field theory)01 natural sciencesPseudoscalar mesonNuclear physicsCross section (physics)0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsLepton

description

We report on a search in e^+e^− annihilations for new π^0-like particles produced in association with a τ-lepton pair. These objects, with a similar mass and similar decay modes to π^0 mesons, could provide an explanation for the non-asymptotic behavior of the pion-photon transition form factor observed by the BABAR Collaboration. No significant signal is observed, and limits on the production cross section at the level of 73 fb or 370 fb, depending on the model parameters, are determined at 90% confidence level. These upper limits lie below the cross section values needed to explain the BABAR form factor data.

https://doi.org/10.1103/physrevd.90.112011